CCNA Routing and Switching Quiz
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Questions and Answers

What is the purpose of the 'ip dhcp excluded-address' command on a Cisco router?

  • To obtain IP parameters from a DHCPv4 server
  • To set up a relay agent for multiple UDP services
  • To configure the router as a DHCPv4 server
  • To exclude a range of IP addresses from being leased to DHCP clients (correct)

    • What is the result of a workstation sending a DHCPv6 INFORMATION-REQUEST message to a server?

  • The workstation is unable to obtain an IPv6 address
  • The workstation sends a request to multiple DHCPv6 servers
  • The workstation receives a list of available DHCPv6 servers
  • The workstation receives configuration information from the server (correct)

    • Which type of ACL is preferred when filtering packets coming from multiple inbound interfaces before they exit the interface?

  • Standard ACL
  • Outbound ACL (correct)
  • Inbound ACL
  • Extended ACL

    • What is the advantage of configuring a Cisco router as a relay agent?

    <p>It can provide relay services for multiple UDP services</p> Signup and view all the answers

    What is the purpose of a standard ACL?

    <p>To filter traffic based on source IP address only</p> Signup and view all the answers

    How many ACLs can be created and applied to a router with two interfaces that is routing both IPv4 and IPv6 traffic?

    <p>8</p> Signup and view all the answers

    What is the default behavior of untagged frames received on a trunk port?

    <p>They are forwarded to the native VLAN only</p> Signup and view all the answers

    Which of the following statements is true about legacy inter-VLAN routing?

    <p>It requires a separate Ethernet router link for each VLAN</p> Signup and view all the answers

    What is the purpose of ICMPv6 Route Advertisement (RA) messages in stateless DHCPv6?

    <p>To allow clients to automatically assign IPv6 addresses to themselves</p> Signup and view all the answers

    What is required for a SOHO router to be connected to an ISP?

    <p>It must be configured as a DHCPv4 client</p> Signup and view all the answers

    Which of the following statements is true about dynamic allocation of IPv6 addresses?

    <p>It is not a commonly used allocation mechanism</p> Signup and view all the answers

    What message will a workstation send to obtain an IP address when it boots after an address lease has expired?

    <p>DHCPDISCOVER</p> Signup and view all the answers

    Study Notes

    Layer 2 and Layer 3 Addresses

    • FF-FF-FF-FF-FF-FF is the Layer 2 destination address for a broadcast
    • 255.255.255.255 is the Layer 3 destination address for a broadcast

    Cisco Router Configuration

    • Configuring a Cisco router as a relay agent provides relay services for multiple UDP services
    • The command ip address dhcp configures the router to obtain IP parameters from a DHCPv4 server

    DHCPv6

    • In stateless DHCPv6, a workstation sends a DHCPv6 INFORMATION-REQUEST message to a server for configuration information
    • Stateless DHCPv6 is a method for configuring IPv6 addresses on employee workstations
    • An administrator can configure a router to obtain IPv6 addresses using the command ipv6 address dhcp

    ACL Placement

    • Inbound ACL placement is preferred when filtering packets from a single source
    • Outbound ACL placement is preferred when filtering packets from multiple sources before they exit an interface

    Access Control Lists

    • The command ip dhcp excluded-address 10.0.15.1 10.0.15.15 excludes 15 IP addresses from being leased to DHCP clients
    • A standard ACL can be configured to allow only specific devices to access a network or resource
    • A single access list statement can match multiple networks (e.g. access-list 10 permit 192.168.16.0 0.0.3.255)
    • Up to 8 ACLs can be created and applied to a router with two interfaces (IPv4 and IPv6)

    Network Configuration

    • An administrator can configure a standard ACL to allow devices on a specific network to access other networks
    • An ACL can be configured to deny traffic from a specific subnet to another subnet

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    Description

    Test your knowledge of CCNA routing and switching concepts with this quiz. Questions cover topics such as VLANs, trunk ports, and DHCPv6.

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